scholarly journals Population genetic structure and milk production traits in Girgentana goat breed

2017 ◽  
Vol 57 (3) ◽  
pp. 430 ◽  
Author(s):  
Salvatore Mastrangelo ◽  
Marco Tolone ◽  
Maria Montalbano ◽  
Lina Tortorici ◽  
Rosalia Di Gerlando ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Assignment Test ◽  
Acid Extraction ◽  
Factorial Correspondence Analysis ◽  
Production Traits

The aim of this work was to evaluate the genetic status of the Girgentana goat, an endangered breed from Sicily (Italy), using microsatellite markers. Furthermore, as the main purpose of the Girgentana breed is milk production, quantitative milk traits were investigated, including fatty acid profile. Molecular data from CSN1S1, CSN2, CSN1S2, and CSN3 casein genes were also used to infer haplotypes. A total of 264 individuals were collected. Samples of Maltese (n = 41) and Derivata di Siria (n = 33) goat breeds were also used to understand the genetic relationship among breeds. Test-day records for milk production were collected to determine daily milk yield, fat, protein, casein, lactose, and somatic cell count. Individual milk samples were also collected for fatty acid extraction. Wright’s statistics, gene flow, Nei genetic distance, factorial correspondence analysis, and Bayesian assignment test showed the existence of genetic variability and differentiation among breeds. The AMOVA results indicated that 89.96% of the total variance was partitioned within populations. The Girgentana breed appears to have a subdivided population, and has not experienced a recent bottleneck. A high variability in milk yield was observed. Mean morning milk yield was 1448 ± 404 g, with 4.30 ± 0.87% and 3.72 ± 0.44% of fat and protein percentages, respectively. The average somatic cell count found in Girgentana goat milk was higher than the threshold of 1 500 000 cells/mL advised in Europe for fresh milk. Gross milk and fatty acid composition were similar to that reported in the literature for other local goat breeds.

scholarly journals Effect of temperament of Jersey and Holstein Friesian cows on milk production traits and somatic cell count (Short Communication)

2011 ◽  
Vol 54 (6) ◽  
pp. 594-599 ◽  
Author(s):  
M. Orbán ◽  
K. K. Gaál ◽  
F. Pajor ◽  
A. Szentléleki ◽  
P. Póti ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Production Traits ◽  
Holstein Friesian ◽  
Daily Milk Yield ◽  
Daily Milk ◽  
Friesian Cows

Abstract. The aim of present study was to investigate the relationships between temperament score and milk production, as well as somatic cell count in a herd of Jersey and Holstein Friesian breeds. The temperament of 283 Jersey and 69 Holstein Friesian cows were assessed (scored) by the temperament score test (behaviour of animals was assessed in a 5-score system (1: calm, 5: nervous) while spending 30 s on the scale during weighing). The daily milk yield, fat, protein content and somatic cell count were also investigated in this study. Our investigation did not reveal any correlation between daily milk yield and temperament score. But milk somatic cell count was showed positive moderate relation with the temperament scores of Jersey (rrank=0.67; P=0.0001) and Holstein Friesian (rrank=0.66; P=0.0001) cows. Calmer cows had lower somatic cell count (Jersey: 135.40×103/cm3; Holstein Friesian: 176.07×103/cm3) compared to the more temperamental cows (Jersey: 540.44×103/cm3; P=0.0001; Holstein Friesian: 744.91×103/cm3; P=0.0001, resp.).

Genetic parameters for somatic cell count (SCC) and milk production traits of Guzerá cows using data normalized by different procedures

2020 ◽  
Vol 52 (5) ◽  
pp. 2513-2522
Author(s):  
Roberta Polyana Araújo da Silva ◽  
Raimundo Nonato Braga Lôbo ◽  
Lenira El Faro ◽  
Glaucyana Gouvêa dos Santos ◽  
Frank Ângelo Tomita Bruneli ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Somatic Cell Count ◽  
Genetic Parameters ◽  
Production Traits ◽  
Milk Production Traits ◽  
Using Data

scholarly journals Comparison of fatty acid composition of milk from Holstein and local breed cows in two breeding systems

2021 ◽  
Vol 78 (2) ◽  
pp. 46
Author(s):  
Yakout BENMALLEM REMANE ◽  
Cristophe BLECKER ◽  
Marie Laure FAUCONNIER ◽  
Mohand Mouloud BELLAL ◽  
Nassim MOULA
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Somatic Cell ◽  
Cell Count ◽  
Protein Content ◽  
Acid Composition ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Local Breed

Milk production and quality are influenced by many factors, including nutrition, management practices and breed. The aim of this study was to determine the effect of farming management system and breed on the milk yield, and fatty acid composition of the milk from 50 confinement-fed cows that were fed a total mixed ration, and 52 pasture-fed cows grazed together in rangeland. Individual milk samples (N = 102) were collected once in February. Milk from local breed was characterized by a significantly lower milk yield, and somatic cell count, and a higher protein content than the Holstein breed. The fatty acid composition was relatively the same in both breeds. The result showed that farming management system has no significant effect on the milk yield, somatic cell count, and fat contents, while there was a significant effect on protein content and fatty acid composition. The milk of Holstein cows from extensive system was characterized by more favorable fat fractions with significantly lower concentrations of C10:0, C12:0, C14:0, the sum of short and medium chain saturated fatty acids and n-6: n-3 ratio, and also by higher concentration of unsaturated fatty acids and the sum of n-3 than the milk of Holstein from intensive system.

scholarly journals Factors Affecting Mastitis Cases and the Correlations of Somatic Cell Count with Milk Production in Holstein Cows

2020 ◽  
Vol 8 (1) ◽  
pp. 171
Author(s):  
Savaş Atasever ◽  
Violetta Tóth ◽  
Edit Mikóné Jónás
Keyword(s):  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Holstein Cows ◽  
Factors Affecting ◽  
Daily Milk Yield ◽  
Production Losses ◽  
Daily Milk

The aim of this study was to determine the factors affecting mastitis cases and to estimate the correlations of somatic cell count (SCC) with milk yield in Holstein cows. The study was conducted in two private dairy farms in Hódmezõvásárhely, South-Hungary. A total of 882 Holstein cows were tested by SCC, fat and protein contents of milk monthly intervals. To test milk SCC and components, two groups were designed, and to examine effect of parity on first mastitis day (FMD) and total mastitis cases (TMC), four groups were divided. It was noted that higher SCC caused to higher TMC. While cows had higher protein content exposed to higher FMD and TMC, cows had lower daily milk yield (DMY) had higher values by mastitis case parameters. In parity evaluation, only primiparous cows had statistically lower TMC. The cows with lower SCC were found in advance in change of milk yield (CMY) up to 6.858±0.947 kg. A negative correlation coefficient was estimated between SCC and DMY. Finally, monitoring SCC of milk is offered to prevent milk production losses and new mastitis occurrences in the herds.

scholarly journals Siyah Alaca İneklerde Meme Ölçülerinin Somatik Hücre Sayısı ve Günlük Süt Verimi Üzerine Etkisi

2013 ◽  
Vol 1 (1) ◽  
pp. 23 ◽  
Author(s):  
Ayhan Ceyhan ◽  
Mahmut Çınar ◽  
Ugur Serbester
Keyword(s):  
Dairy Cattle ◽  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Holstein Cattle ◽  
Milk Samples ◽  
Daily Milk Production ◽  
Daily Milk

This study was carried out to investigate the effect of udder measurements group on somatic cell count (SCC) and daily milk production. Milk samples and udder measurements were collected monthly from 79 lactating Holstein cows on commercial dairy in the province of Niğde. In the study, front teat length (FTL), rear teat length (RTL), front teat diameter (FTD), rear teat diameter (RTD), distance between front teats (DBFT), distance between rear teats (DBRT), front udder height, (FTH), rear udder height (RUH), distance between front and rear teats (DBST) were obtained in before afternoon milking. Udder measurements were divided into 5 groups according to the measurements. The effect of DBFT, DBRT, FTH, RTD, FTD and DBRT groups on daily milk production were statistically significant, while FTH, RUH and DBRT were found non-significant. The effect of udder measurements groups on SCC was found not significant, except rear teat diameter (RTD). Average daily milk production and SCC were estimated as 28.25 kg/day and 274.90 cell/ml, respectively. In conclusion, it can be said that the distance between teats, teat’s diameter and front udder height of Holstein cattle is important factor for milk yield of Holstein dairy cattle. Also, SCC is effected by rear teat diameter.

Short-term effects of frequent milking of dairy cows

1989 ◽  
Vol 56 (4) ◽  
pp. 587-592 ◽  
Author(s):  
Renee Van Der Iest ◽  
J. Eric Hillerton
Keyword(s):  
Dairy Cows ◽  
Somatic Cell ◽  
Cell Count ◽  
Milk Production ◽  
Milk Yield ◽  
Somatic Cell Count ◽  
Milk Composition ◽  
Short Term ◽  
Robotic Milking ◽  
Experimental Values

SummaryWhen six cows were milked every 4 h over 48 h the average milk yield per cow increased by 1O·7% for the last 24 h period compared with the previous 5 d. Milk composition was similar to pre-experimental values although fat content was 0·5% lower in the last 24 h. The somatic cell count rose to twice the pre-experimental value over the first 24 h but was not significantly different by the second 24 h. It appears that cows responded quickly to an increased frequency of milking and milk of an acceptable composition was produced. This has implications for management of milk production where quotas are in operation and for robotic milking systems.

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